include/linux/mfd/mcp.h

   1 /*
   2  *  linux/drivers/mfd/mcp.h
   3  *
   4  *  Copyright (C) 2001 Russell King, All Rights Reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License.
   9  */
  10 #ifndef MCP_H
  11 #define MCP_H
  12
  13 struct mcp_ops;
  14
  15 struct mcp {
  16         struct module   *owner;
  17         struct mcp_ops  *ops;
  18         spinlock_t      lock;
  19         int             use_count;
  20         unsigned int    sclk_rate;
  21         unsigned int    rw_timeout;
  22         struct device   attached_device;
  23 };
  24
  25 struct mcp_ops {
  26         void            (*set_telecom_divisor)(struct mcp *, unsigned int);
  27         void            (*set_audio_divisor)(struct mcp *, unsigned int);
  28         void            (*reg_write)(struct mcp *, unsigned int, unsigned int);
  29         unsigned int    (*reg_read)(struct mcp *, unsigned int);
  30         void            (*enable)(struct mcp *);
  31         void            (*disable)(struct mcp *);
  32 };
  33
  34 void mcp_set_telecom_divisor(struct mcp *, unsigned int);
  35 void mcp_set_audio_divisor(struct mcp *, unsigned int);
  36 void mcp_reg_write(struct mcp *, unsigned int, unsigned int);
  37 unsigned int mcp_reg_read(struct mcp *, unsigned int);
  38 void mcp_enable(struct mcp *);
  39 void mcp_disable(struct mcp *);
  40 #define mcp_get_sclk_rate(mcp)  ((mcp)->sclk_rate)
  41
  42 struct mcp *mcp_host_alloc(struct device *, size_t);
  43 int mcp_host_add(struct mcp *, void *);
  44 void mcp_host_del(struct mcp *);
  45 void mcp_host_free(struct mcp *);
  46
  47 struct mcp_driver {
  48         struct device_driver drv;
  49         int (*probe)(struct mcp *);
  50         void (*remove)(struct mcp *);
  51 };
  52
  53 int mcp_driver_register(struct mcp_driver *);
  54 void mcp_driver_unregister(struct mcp_driver *);
  55
  56 #define mcp_get_drvdata(mcp)    dev_get_drvdata(&(mcp)->attached_device)
  57 #define mcp_set_drvdata(mcp,d)  dev_set_drvdata(&(mcp)->attached_device, d)
  58
  59 static inline void *mcp_priv(struct mcp *mcp)
  60 {
  61         return mcp + 1;
  62 }
  63
  64 #endif